Wireless sensor network (WSN) is an emerging technology in the today’s world. The WSN has been a prominent technology in many fields so it is very important to decrease the energy consumption by the network and increase the network’s life. To achieve this we propose an adaptive Sleep/Wake scheduling technique for WSN. In this approach, we initially consider some nodes as initiator nodes through these nodes we decide the cluster head. Then these cluster head forms clusters in the network. In these clusters, the cluster head selects a node with the highest energy, keep it in active mode, and sends the remaining nodes into the sleep mode and a traffic adaptive sleep-wakeup scheduling technique is provided. simulation results, we show that the proposed scheduling technique increases the average residual energy and throughput.